本题目来源于试卷: Physics Unit33: Astrophysics and Cosmology，类别为 Generic Physics
[单选题]
The Schwarzschild radi64(wefjtt)o 6u iun*pcweq2t1l9 k: vus of a black hole is *ck 6 a8.0z s;vl t/px8fdewdhk9 tb(mthat radial distance from the center of a sphere within which not even light can escape. It was first discovered mathematically by Schwarzschild in 1916 after Einstein published his general relativity theory. It can be calculated from a star's mkd .s ;/et0w96dpv8hzxtmca l *bf( k8ass M as: $R = 2GM/c^2$. Take the radius of both stars A and B as the Schwarzschild radius. If the mass of star A is twice as much as the mass of star B, the average density of star A, compared to star B will be
A. the same.
B. twice as much.
C. half as much.
D. four times as much.
E. one-fourth as much.
参考答案: E
本题详细解析:
暂无
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Post time 2024-1-22 00:41:59